Device for driving the bands of rolling platforms



4 July 10, 1923. 1,461,476 v 1.. D. A. CASALONGA ET AL DEVICE FOR DRIVING THE BANDS OF ROLLING PLATFORMS Filed May 5. 1922 1 4 Sheets-Sheet 1 Fig. 1

2/ a :i' c (l Ei EU 1 e/ L L July 10, 1923. v I 1.461.476

L. D. A. CASALONGA ET AL DEVICE FOR DRIVING THE BANDS 0F ROLLING PLATFORMS Filed May 5, 1922 4 Sheets-Sheet 2 Fig. 1

Fig. 6

@ a wa m July 10, 1923. 1.461.476

L. D. A. CASALONGA ET AL DEVICE FQR DRIVING THE BANDS OF ROLLING PLATFORMS Filed May 5, 1922 4 Sheets-Sheet 5 Jul 10, 1923. 1.461.476

L. D. A. CASALONGA ET AL DEVICE FOR DRIVING I HE BANDS OF ROLLING PLATFORMS Filed May 5. 1922 4 Sheets-Sheet 4 Fig. 41

- -against eachrother,

Patented July 10, 1923.

- ouis noMINI'QUE AtreUs'rn oAsALoiTGA, or r vANvE's; FRANCE} fni's, weets-ca e n; oa

JEvIc roR'nRIvING THE BANDS ormdnnme marromrsf Application filed m 3,

To allwhom -itmay-coacem:

Be' it known that-we, Lonis DOMINIQUE AUeusrE-C'AsAL'oNcA and'GEoRcEs Mro'r, both residing "'the'form'er atParis, 15 Rue des llalle's,"the

citizens a of the French Republiclatter! at Vanves," Seine 24 Rue dIssy,

F ran'ce; have invented a new and useful Improvement in Devices *'for; Driving, the

Bandswzof Rollingz Platforms; and we do? hereby declare the-following to be'a ifull;

clear, and-exact description of the same herence exerted Fis quite independent *from the *weight, of the masses to be put into motion and :may be "as "great as is allowed" by;

the resistance of thewmaterials "used; The general mean applied according to the 'presiattain the aforesaid result,

ent invention to is characterized by the utilization :of the adherence produced \upon 2a metallic band' pressed between "two rollers. strongly pressed ingroller,

tuting the" platforin fto be driven, said member resting, throughzthe medium' 'of wheelsyupon suitably "disposed =rails, so that the traction of this member is thus-absolutelyv independent from any. strain of adherence:

One embodiment of the invention is aillus-u trated, merely :as an example; by the accompanying-rdrawingsflin iwhichzv.

Figures Land l'are the' two' halves :(to

be assembled 1 alongithe'line .AB')' of a side elevation of an element of the mechanism.

Figure 2 is a section of the sameupon 531(1511118,

Figure 3 2, view thereof similar -"tothat+ of; Figure 2, but "showing the-device fol-' ments' (swing: relatively to'iea'ch' other when runninga-alongaar v s seen on said figuresg the drivingmecha 'nismi::=comprises substantially: a: -'band between a number of 7 whole circuit;

for instance by electrical capable \of swing, one-of which is the'idriwa band 7 bein'gi fastene'dby any. suitable connection to -the "member icon'stiof connection" of two: consecutive "elementswf 'the driving-f band and :the m'anner in which these eleformed of consecutivelelements andsgueezed -;pai-rs"- of rollers'=-dis-- tributed,- at -suitable intervals, :a-long the In the drawings series sof Pfiil'S OfflIOllGIlS, ieach }.of; 'gwhicl i series comprises two pairs, namely V vfor the" first series; :1, 1*, 2 iaan i qrwt s s d'fii r l' are driving-rollers; the rollers; :'-2,- 2', 121-, 43

v 2" being intended to-with'stand; the--=pres-'- This invention relates to a traction*de--' vice applicable to :fthe translation :ofplatformsof closed circuit; wherebyl is obtained? the essential result that the strainwof adary n a; strong vertical frame r 15 ;iresting f f' upon a ,bed-platei-ll fastened to the groundv The rollers 1, 1 (1; 1' keyed upon-the sha-Ffll 'faffbi are idriven-by,-any=suitable;means;

pow r: This shafta-b is;-supp orted-Iby;-a horse5-i vshoe shaped 1 a yoke I 7 embracing aeXternall-y This 1 yoke may pivot =.aro'und an axisv 45a n a-earound: e liir PaXTiS perpendicularito its directio'n' y Thi eoz arrangement secures a perfect bearing olf -v [the rollers against the band .3 whatevr:1be thevfinclination of-the latter;

The pressure upon the ;.-band--3 ,isrobtained e by the deflection rof a abladespring sm 'gfa 's- 'tened to (the end" m -01f the supportingeyoke 7 such deflection beingcaused by \the rota tion of -:a----cam; '8 actuated {means -;0f1an endless-screw and ,LW0rIn-wheel 19.- v

the s e Figll 'fig'lthetspri-ng 12 1 owing to the position ggive'n to the wf'cam c8 its pressure to ..thet" rollers *1, 31* according-:

' 0m w, .1; ,3 to'the "ratio j of the f'levergarms' (F gure 9 Thevertical frain-e 1'5 'xm'ay ypivot around an axis' lO supported *by' -a bed plat ivl l tened-i'to the ground; this movemez-itenabliag are illustrated onlj'rtwgm 10s I i trolled all the "tractors" "employed far the 'itransl'atiomof the'platformi I i The several elements the whole frame to be inclined relative to the vertical.

Each element of the metallic band 3 is connected to a small wagon which constitutes an element of the platform proper.

This connection is realized in the following manner: The band 3 is riveted onto a sheet-iron-beam 6 placed along the axis of the wagon, the four bearing-wheels 7' of which are each maintained to a bracket fastened to double longitudinal beams riveted upon the two end-cross-beams 5, these two double longitudinal beams and the two endcross-beams constituting the frame of said wagon. r

The elimination of the axles of the wheels 1' has for its purpose to allow the free passage of the beam 6 and of the driving-band 3. The beam is freely suspended to the frame of the wagon by two trunnions 4c, 4' fastened to the middle of the end-crossbeams. The frameof the wagon may thus incline itself relatively to the plane of the traction-beam 6, a condition which is necessary when running along curves of small radius, owing to the super-elevation of the outer rail.

The strain of adherence of the band 3 is transferred to the frame through the medium of the trunnions 4.- and 4'. This strain results in a thrust being exerted upon one of the end-cross-beams of the frame, owing to which thrust said frame becomes a driving-frame relative to those which follow it and are coupled with each other and with it. I

Each'element of the band 3 has substantiallythe same length as the frame of the wagon which sustains it.

3 are independent from each other, as well as from the beams 6 to which they are suspended. They are merely constrained to remain approximately the same distance from the trunnions of the driving shaft a;? the wagons being coupled with'each other, like the cars of a railwaytrain. Assuming that a slight variation take place in said distances, there would result, owing to the possibility given to the frame 15 to pivot around the center 10, no harm whatever as'far as the adherence caused by the rollers is concerned. This is, indeed, due to thefact that said frame bears only upon the axis 10 andis suspended to the tractionbeam 6 through the medium of the rollers 2,2,- which press constantly upon the band 3, owing as well to the weight of the whole frame as to the reaction due to the tangential strain.

In the case where slight differences of level would exist in the sequence of the wagone which succeed each other for passing between the driving-rollers, the frame '15 would follow these variations by rising or fallingowing to the pivotal connection of the whole around the axis 10. The weight supported by the band 3 may, besides, be balanced up to the required amount by means of a flat spring (not shown) interposed between the frame 15 and the bedplate 11.

In order to secure the continuity of the traction-strain exerted upon the bands 3, notwithstanding. the independence of the band of each wagon relatively to the other, with the series of pairs of rollers 1, 2, 1*,2, illustrated by Figure 1, there has been coupled another series of rollers 1, 2', 1", 2' arranged and desi ned in the same manner as the first one. ne of the series is controlled by the other, for instance, through the medium of a chain-gear 17, such as that indicated on Figures 1 and 1 by thick dotted lines. The equality ofspeeds is thus ensured between the two series .of pairs of rollers acting simultaneously on the band; the traction-strain is thereby doubled and said strain transferred from the element 3 to the consecutive one without any abrupt transition.

In order to secure the continuousbearing of the elements 3, notwithstanding their independence, upon concave and convex as illustrated by Fig ures 5 and 6. It will be readily understood that, owin to said outlines, the foremost element, wien about to leave a series of pairs of rollers, is still engaged therewith at the moment when the next element is engaging it. On the other hand, this arrangement enables the consecutive elements to operate within the curves, while preserving, relatively to each other, the same distance, practically as small as it is desired, as separates them when in a straight line.

In the preceding explanations, it has been assumed that the traction-bands 3 were disposed horizontally, but it is obvious that the fundamental principle of the invention would not be altered, if said bands were disposed vertically that is to say at right angles with the plane of the frames of the wagons.

We claim:

1. A traction device for rolling platforms, comprising, a plurality of carriages, a movable band fixed to each of the carriages, a plurality of sets of cooperating rollers, said band being positioned between the rollersof each set, each set comprising a driving, and a pressing roller. 7

2. A device according to claim 1, an axis positioned at right angles to the direction of motion of the band, a supporting frame pivoted on the axis, said rollers being supported in the frame, whereby the driving rollers can accommodate themselves for change of level of the band.

3. A device according to claim 2, compristhe rollers the opposite ends of consecutive elements are respectively ing, a horse shoe shaped support embracing the frame on three sides, and connected to the frame by .a universal joint, and a shaft in the support, the driving rollers being positioned on the shaft.

6. A device according to claim 2, said band comprising a plurality of separate elements, having complementary, are shaped,

interfitting end portions, whereby to facili-' tate passage on curves, and to assure con tinuous traction of therollers on the band.

7. A device according. to claim 3', said band comprising a plurality of separate elements, having complementary, are shaped, interfitting'end portions whereby to facilitate passage on curves, and to assure continuous traction ofthe rollers on the band,

In testimony whereof, we have signed our names to this specification.

LOUIS DOMlNIQUE AUGUSTE CASALONGA, I GEORGES M101. 

